Controlled values for @outputclass on certain elements Bootstrap–specific classes Used to pick up Bootstrap formatting in site output. Tables Highlight rows on hover Phrases Codeblocks DITA-OT Processing Extensions https://www.dita-ot.org/dev/reference/extended-functionality.html Syntax Highlights Used to trigger syntax highlighting via https://prismjs.com. Code phrases <codeph> is used semantically three unique ways in the OT docs. Rather than using element specialization this limits @outputclass on <codeph>, effectively creating semantic specialization without needing to modify DTDs or schemas. How <codeph> is used: https://github.com/dita-ot/docs/wiki/coding-guidelines#plug-ins Titles Added by automated processes; not to be manually added by authors.